Commit 02214c63 authored by Ivan Tyagov's avatar Ivan Tyagov

Add a generic implementation of transforming appended data in a "close to real time" way.

parent a81baf75
......@@ -49,7 +49,7 @@
</chain>
<chain>
<type>Data Stream</type>
<workflow>edit_workflow, validation_workflow</workflow>
<workflow>data_stream_interaction_workflow, edit_workflow, validation_workflow</workflow>
</chain>
<chain>
<type>Data Supply</type>
......
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>Script_magic</string> </key>
<value> <int>3</int> </value>
</item>
<item>
<key> <string>_bind_names</string> </key>
<value>
<object>
<klass>
<global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
</klass>
<tuple/>
<state>
<dictionary>
<item>
<key> <string>_asgns</string> </key>
<value>
<dictionary>
<item>
<key> <string>name_container</string> </key>
<value> <string>container</string> </value>
</item>
<item>
<key> <string>name_context</string> </key>
<value> <string>context</string> </value>
</item>
<item>
<key> <string>name_m_self</string> </key>
<value> <string>script</string> </value>
</item>
<item>
<key> <string>name_subpath</string> </key>
<value> <string>traverse_subpath</string> </value>
</item>
</dictionary>
</value>
</item>
</dictionary>
</state>
</object>
</value>
</item>
<item>
<key> <string>_body</string> </key>
<value> <string>"""\n
Read tail of a Data Stream and aplly needed transformations.\n
This script is called every time we appendData to a Stream\n
using data_stream_interaction_workflow.\n
\n
The idea is to provide close to real time data transformations.\n
As transformation is quite specific we leave this script empty so developers\n
can hook in and add needed transformations.\n
\n
Interesting here ti to use OffsetIndex property sheet which allows to place\n
marker till where a Data Stream has been processed.\n
"""\n
</string> </value>
</item>
<item>
<key> <string>_params</string> </key>
<value> <string></string> </value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>DataStream_transformTail</string> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="InteractionWorkflowDefinition" module="Products.ERP5.InteractionWorkflow"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>_objects</string> </key>
<value>
<tuple/>
</value>
</item>
<item>
<key> <string>creation_guard</string> </key>
<value>
<none/>
</value>
</item>
<item>
<key> <string>description</string> </key>
<value> <string>Data Stream interaction workflow</string> </value>
</item>
<item>
<key> <string>groups</string> </key>
<value>
<tuple/>
</value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>data_stream_interaction_workflow</string> </value>
</item>
<item>
<key> <string>manager_bypass</string> </key>
<value> <int>0</int> </value>
</item>
<item>
<key> <string>title</string> </key>
<value> <string>Data Stream interaction workflow</string> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="Interaction" module="Products.ERP5.Interaction"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>_mapping</string> </key>
<value>
<dictionary/>
</value>
</item>
<item>
<key> <string>_objects</string> </key>
<value>
<tuple/>
</value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>interactions</string> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="InteractionDefinition" module="Products.ERP5.Interaction"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>actbox_category</string> </key>
<value> <string>workflow</string> </value>
</item>
<item>
<key> <string>actbox_name</string> </key>
<value> <string></string> </value>
</item>
<item>
<key> <string>actbox_url</string> </key>
<value> <string></string> </value>
</item>
<item>
<key> <string>activate_script_name</string> </key>
<value>
<tuple/>
</value>
</item>
<item>
<key> <string>after_script_name</string> </key>
<value>
<tuple/>
</value>
</item>
<item>
<key> <string>before_commit_script_name</string> </key>
<value>
<list>
<string>DataStream_appendData</string>
</list>
</value>
</item>
<item>
<key> <string>description</string> </key>
<value> <string></string> </value>
</item>
<item>
<key> <string>guard</string> </key>
<value>
<none/>
</value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>DataStream_appendData</string> </value>
</item>
<item>
<key> <string>method_id</string> </key>
<value>
<list>
<string>_appendData</string>
</list>
</value>
</item>
<item>
<key> <string>once_per_transaction</string> </key>
<value> <int>0</int> </value>
</item>
<item>
<key> <string>portal_type_filter</string> </key>
<value>
<none/>
</value>
</item>
<item>
<key> <string>portal_type_group_filter</string> </key>
<value>
<none/>
</value>
</item>
<item>
<key> <string>script_name</string> </key>
<value>
<tuple/>
</value>
</item>
<item>
<key> <string>temporary_document_disallowed</string> </key>
<value> <int>1</int> </value>
</item>
<item>
<key> <string>title</string> </key>
<value> <string></string> </value>
</item>
<item>
<key> <string>trigger_type</string> </key>
<value> <int>2</int> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="Scripts" module="Products.DCWorkflow.Scripts"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>_mapping</string> </key>
<value>
<dictionary/>
</value>
</item>
<item>
<key> <string>_objects</string> </key>
<value>
<tuple/>
</value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>scripts</string> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>Script_magic</string> </key>
<value> <int>3</int> </value>
</item>
<item>
<key> <string>_bind_names</string> </key>
<value>
<object>
<klass>
<global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
</klass>
<tuple/>
<state>
<dictionary>
<item>
<key> <string>_asgns</string> </key>
<value>
<dictionary>
<item>
<key> <string>name_container</string> </key>
<value> <string>container</string> </value>
</item>
<item>
<key> <string>name_context</string> </key>
<value> <string>context</string> </value>
</item>
<item>
<key> <string>name_m_self</string> </key>
<value> <string>script</string> </value>
</item>
<item>
<key> <string>name_subpath</string> </key>
<value> <string>traverse_subpath</string> </value>
</item>
</dictionary>
</value>
</item>
</dictionary>
</state>
</object>
</value>
</item>
<item>
<key> <string>_body</string> </key>
<value> <string>"""\n
Handle appended data chunks.\n
"""\n
data_stream = state_change[\'object\']\n
\n
# call you own script to handle newly appended data which \n
# is not processed yet\n
data_stream.DataStream_transformTail()\n
</string> </value>
</item>
<item>
<key> <string>_params</string> </key>
<value> <string>state_change,**kw</string> </value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>DataStream_appendData</string> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="Variables" module="Products.DCWorkflow.Variables"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>_mapping</string> </key>
<value>
<dictionary/>
</value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>variables</string> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
<?xml version="1.0"?>
<ZopeData>
<record id="1" aka="AAAAAAAAAAE=">
<pickle>
<global name="Worklists" module="Products.DCWorkflow.Worklists"/>
</pickle>
<pickle>
<dictionary>
<item>
<key> <string>_mapping</string> </key>
<value>
<dictionary/>
</value>
</item>
<item>
<key> <string>id</string> </key>
<value> <string>worklists</string> </value>
</item>
</dictionary>
</pickle>
</record>
</ZopeData>
Wendelin is a Big Data platform based on ERP5.
More information can be found at http://www.wendelin.io/
\ No newline at end of file
......@@ -20,6 +20,7 @@ Data Release | edit_workflow
Data Release | validation_workflow
Data Set | edit_workflow
Data Set | validation_workflow
Data Stream | data_stream_interaction_workflow
Data Stream | edit_workflow
Data Stream | validation_workflow
Data Supply Line | edit_workflow
......
data_stream_interaction_workflow
\ No newline at end of file
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